<?php
http_response_code(404);
    include "./mysql.php";
    $user_name = $_GET["user_name"];
    $user_pwd = $_GET["user_pwd"];
    $sql = "insert into user (user_name,user_pwd) values ('${user_name}','${user_pwd}')";
    $result = $mysqli->query($sql);
    if($result){        
        echo "true";
    }else{        
        echo "false";
    }